Carbonic-acid bath.



UNITED STATES PATENT OFFICE.

CARBONIC-ACID BATH.

Specification of Letters Patent.

Patented Oct. 29, 1907.

Application filed August 23 1906- Serial No. 331,695.

To all whom it may concern:

Be it known that I, ALFRED ZUCKER, a subject of the King of Bavaria, anda resident of 63 Schnoor street, Dresden, in the Kingdom of Saxony,German Empire, have invented certain new and useful Improvements inCarbonic-Acid Baths, of which the following is an exact specification. I

My invention relates to carbonic acid baths, and has for its object toincrease the effective action of baths of this type on the surface to bebathed. As known hitherto such baths have been prepared by introducingthe bicarbonate of the alkali into the water before or after havingadded the acid to the bath, whereby the water was carbonated through itsentire mass, much of the carbonic gas escaping in large bubbles.

Baths prepared in such manner show the defect that the formation anddistribution of the carbonic acid gas cannot be regulated. Thisdisadvantage is overcome by the present invention, and the noveltyconsists in this, that the bath, after the acid has been added to thewater, is prepared in such manner that the gas produced by the action ofthe acidulated water on the alkali is prevented from permeating thewhole bath, so that the formation of the carbon dioxid takes place onlyat the desired places of the bath and only as slowly as the customer maywant it. This purpose is attained by placing the alkali within a porouscover, envelop or bag of a soft, compressible fabric, the meshes ofwhich are so small as to be adapted to produce a regular liberation ofcarbon dioxid in very small bubbles when placed in the acidulated water,so that the customer of the bath may press the bag and liberate thecarbon dioxid in desired measure, and at such places in the bath as hemay de sire.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

A carbonic acid bath'consisting of acidulated water and containing apackage consisting of an alkaline bicarbonate inclosed in a porous bagof flexible, compressible fabric adapted to produce a regular liberationof carbon dioxid in very small bubbles.

In witness whereof I have hereunto set my hand in the presence of twowitnesses.

ALFRED ZUCKER.

Witnesses HENRY HASPER, WOLDEMAR HAUP'L.

